One good thing with trying a stimulant like Ritalin or Metadate (slow-release Ritalin) is that you will know very quickly whether it helps with your ADD, and if it's not tolerable for some reason, you can quickly discontinue.

Would Adderall have been tolerable at a lower dose, do you think? Metadate has no buzz-crash roller coaster (in my experience), but with any stimulant if you're expecting a possibly adverse reaction, start with a very low dose and titrate up slowly.